Intelligent redundant measurement and control type fully-automatic control system for air conditioner return water

Abstract

The invention provides an intelligent redundant measurement and control type fully-automatic control system for air conditioner return water and belongs to the field of control technologies for the air conditioner return water of thermal power plants. The fully-automatic control system comprises an air circuit breaker and fuse combination device, a redundant processing and intelligent control device, a control switch combination device, a power supply running failure indicating device, a liquidometer P1, a liquidometer P2, a high water level switch P3, a low water level switch P4, a frequency converter 1 with a built-in PID controller and a built-in DP communication adapter, an alternating current contactor 1, a display operation board I, a frequency converter 2 with a built-in PID controller and a built-in DP communication adapter, a alternating current contactor 2, a display operation board 2, an alternating current contactor 3, a an alternating current contactor 4, a thermorelay 1 and a thermorelay 2. The fully-automatic control system has the advantages that the running of the control system is safe and reliable; starting can be carried out by one key; and the control process is fully intelligent.

Description

technical field [0001] The invention belongs to the technical field of air conditioner return water control in thermal power plants, and in particular provides an intelligent air conditioner return water automatic control system with redundant measurement and control. The system capable of controlling the return water of the air conditioner is stable and safe. Background technique [0002] The generator sets of thermal power plants are generally installed on high-rise platforms exceeding 10 meters in the factory building, and the unit control room is also built on high-rise platforms. The ambient temperature is relatively high, generally exceeding 30°C. Due to the non-storable characteristics of electricity in thermal power plants, unless special circumstances occur, the generator sets must continue to run to ensure the normal operation of the national economy. For thermal power plants, the various control units, computer systems and monitoring systems of the generator set ...

AI Technical Summary

Problems solved by technology

The water level should not be ultra-low, as it is easy to form cavitation, which will cause damage to the flow-passing parts of the pump, such as the impeller, and the pump will generate noise and vibration, resulting in a decline in the performance of the pump, and at the same time affecting the heat dissipation of the pump

The water level should not be too high, the amount of return water will be large, and the water pump will not pump out water in time, and it will easily flow out of the overflow pipe, resulting in waste of water resources and other losses

Images